Vulnerability CVE-2018-17000
Published: 2018-09-13

Description:
A NULL pointer dereference in the function _TIFFmemcmp at tif_unix.c (called from TIFFWriteDirectoryTagTransferfunction) in LibTIFF 4.0.9 allows an attacker to cause a denial-of-service through a crafted tiff file. This vulnerability can be triggered by the executable tiffcp.

Type:

CWE-476

 (NULL Pointer Dereference)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Libtiff -> Libtiff 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
http://bugzilla.maptools.org/show_bug.cgi?id=2811
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.html
http://www.securityfocus.com/bid/105342
https://lists.debian.org/debian-lts-announce/2019/02/msg00026.html
https://usn.ubuntu.com/3906-1/
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